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Analog Devices Inc. LTC3204EDC-5#TRPBF
- Part No.:
- LTC3204EDC-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3204EDC-5#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP 5V 150MA 6DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC3204EDC-5#TRPBF from Analog Devices (formerly Linear Technology) is a fixed 5V, low-noise, constant-frequency switched-capacitor voltage doubler IC. It operates from 2.7V to 5.5V input, delivers up to 150mA output current, features 1.2MHz switching frequency, and uses only ceramic capacitors in a compact 2mm × 2mm DFN package. It is designed for Li-Ion battery-powered USB OTG and white LED driver applications.
For engineers reviewing the LTC3204EDC-5#TRPBF datasheet, LTC3204EDC-5#TRPBF pinout, LTC3204EDC-5#TRPBF application, or LTC3204EDC-5#TRPBF equivalent, key selection criteria include regulated 5V output capability, 150mA load support at ≤5.5V input, <20mVP-P output ripple at 100mA, shutdown current <1µA, and thermal/short-circuit protection - all in a 6-lead DFN with exposed GND pad.
Technical Context
The LTC3204EDC-5#TRPBF implements a 2-phase nonoverlapping 1.2MHz charge pump topology to double VIN and regulate VOUT to 5V via internal resistor-divider feedback and current-modulated switching control. Its regulation loop stores error signal directly on the output capacitor, forming the dominant pole for stability.
It integrates soft-start (0.75ms ramp), active-low CMOS shutdown (VIH = 1.3V, VIL = 0.4V), thermal shutdown (~160°C trip), and current limiting (300mA). Unlike the Burst Mode variant LTC3204-5, this part (B-version) maintains constant-frequency operation across all loads, eliminating frequency modulation artifacts in noise-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±4% (4.8V–5.2V); stable regulation over 2.7V–5.5V input and up to 150mA load. |
| Input Voltage Range | 2.7V to 5.5V; supports single Li-Ion (3.0–4.2V) and USB 5V bus with margin. |
| Max Output Current | 150mA at VOUT ≥ 4.8V; sufficient for driving 5 white LEDs in parallel or powering USB OTG PHYs. |
| Switching Frequency | 1.2MHz (typ); enables use of tiny 2.2µF ceramic flying/output capacitors and minimizes EMI filtering area. |
| Output Ripple | 20mVP-P at 100mA load; low enough for noise-sensitive analog/RF circuitry without additional LDO post-regulation. |
| Shutdown Current | <1µA; disconnects VOUT from VIN, enabling true zero-load power-off in battery systems. |
| Efficiency | 82% at VIN = 3V, IOUT = 100mA; matches theoretical 2×VIN linear regulator efficiency, minimizing heat in space-constrained layouts. |
Pinout & Package
Package: 6-lead 2mm × 2mm plastic DFN (0.75mm height) with exposed GND pad (Pin 7), JEDEC MO-229 variation WCCD-2. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 7) | Ground reference and thermal path | Both pins must connect to solid PCB ground plane; Pin 7 (exposed pad) is mandatory for thermal management and noise reduction. |
| VIN (Pin 2) | Main input supply | Accepts 2.7V–5.5V; requires ≥2.2µF low-ESR ceramic bypass capacitor placed adjacent to pin. |
| VOUT (Pin 3) | Regulated 5V output | Delivers up to 150mA; requires ≥2.2µF low-ESR ceramic capacitor near pin for ripple suppression and loop stability. |
| C+ (Pin 4) | Flying capacitor positive terminal | Connects to positive side of 2.2µF ceramic flying capacitor; polarity reversal during operation prohibits polarized caps. |
| C− (Pin 5) | Flying capacitor negative terminal | Connects to negative side of same flying capacitor; forms charge-transfer path with C+ and internal switches. |
| SHDN (Pin 6) | Active-low shutdown control | CMOS input (VIH = 1.3V, VIL = 0.4V); must be driven - never left floating - to prevent unintended enable/disable. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-frequency 1.2MHz operation | Eliminates variable-frequency noise spread; simplifies EMI filtering and avoids audible switching tones in portable audio devices. |
| Integrated soft-start (0.75ms) | Prevents inrush current spikes into output capacitor, avoiding input rail droop and system brownouts during power-up. |
| Thermal + short-circuit protection | Auto-recovers from indefinite VOUT-to-GND shorts without latch-up; cycles safely until fault is removed, protecting downstream circuitry. |
| True output disconnect in shutdown | VOUT is fully isolated from VIN during SHDN assertion, preventing backfeed and enabling independent power domain sequencing. |
| Low-noise regulated charge pump | 20mVP-P ripple at full load meets requirements for powering RF front-ends, precision ADCs, and USB PHYs without added LDO overhead. |
Applications
| USB On-The-Go Power Supply | Li-Ion to 5V White LED Driver |
|---|---|
Use Scenario: Portable device (e.g., smartphone, tablet) acting as USB host to peripherals like keyboards or flash drives. IC Role / Device Role / Timing Role: Regulated 5V power source for USB VBUS line, replacing buck converter in cost- and space-constrained designs. Use Value: Eliminates inductor, reduces BOM count and PCB area by >30%, while maintaining USB 2.0-compliant 5V ±5% and 500mA peak capability (via 150mA sustained + capacitor hold-up). |
Use Scenario: Driving 3–5 white LEDs (3.0–3.6V forward) from a single Li-Ion cell in handheld medical or industrial instruments. IC Role / Device Role / Timing Role: Fixed 5V boost source feeding parallel LED strings with current-limiting resistors or external constant-current drivers. Use Value: Enables high-efficiency LED illumination without magnetic components; 82% efficiency at 100mA extends battery runtime vs. linear solutions. |
| Handheld Industrial Scanner | Low-Power Microcontroller Auxiliary Rail |
Use Scenario: Battery-powered barcode scanner requiring clean 5V for laser diode driver and image sensor interface. IC Role / Device Role / Timing Role: Primary 5V supply for analog front-end and digital logic, operating across full Li-Ion discharge range (4.2V → 2.7V). Use Value: Maintains tight 5V regulation (±4%) down to 2.7V input, ensuring consistent laser output and sensor SNR without brownout resets. |
Use Scenario: Providing isolated 5V auxiliary rail for MCU reset supervisor, USB transceiver, or EEPROM programming voltage in embedded IoT nodes. IC Role / Device Role / Timing Role: Secondary regulated supply decoupled from main system rail, enabling independent power sequencing and low-quiescent sleep modes. Use Value: <1µA shutdown current preserves battery life during deep-sleep states; fast 0.75ms soft-start ensures reliable MCU boot timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3204EDC-3.3#TRPBF | Fixed 3.3V output; 1.8V–4.5V input; max 50mA output; same 1.2MHz constant-frequency architecture. | Targets dual-cell alkaline (2×1.5V) or low-voltage microcontrollers; unsuitable for 5V USB or LED biasing. | Select when system requires 3.3V rail from sub-3V sources and lower current; pin-compatible but not functionally interchangeable. |
| LTC3200-5ES6#TRMPBF | 5V output; 2.7V–4.5V input; 100mA max; 2MHz switching; ThinSOT-6 package (3mm × 3mm); higher quiescent current (3.5mA). | Better suited for ultra-compact layouts where DFN footprint is prohibitive; less efficient at high loads due to higher IQ. | Choose for space-constrained designs accepting trade-offs in efficiency and thermal performance; not pin-compatible - different pinout and package. |
Compared with LTC3204EDC-3.3#TRPBF, the LTC3204EDC-5#TRPBF provides higher output voltage and current for USB/LED loads, while LTC3200-5ES6#TRMPBF trades package size for reduced efficiency and thermal headroom - making the LTC3204EDC-5#TRPBF optimal for balanced performance in Li-Ion-powered 5V systems.
Availability
LTC3204EDC-5#TRPBF is available at Aetrix Electronics and suitable for USB On-The-Go power supplies, Li-Ion to 5V white LED drivers, and handheld industrial scanners requiring stable component supply and long-term production continuity.
Supply support for LTC3204EDC-5#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its high-performance analog/mixed-signal product lines. Linear pioneered precision power management ICs with emphasis on low-noise, high-efficiency architectures.
The LTC3204 series belongs to Linear's regulated charge pump portfolio, designed specifically for inductorless DC/DC conversion in portable, battery-powered systems where board space, EMI, and cost are critical constraints.
FAQ
What is the input voltage range supported by the LTC3204EDC-5#TRPBF?
The LTC3204EDC-5#TRPBF supports an input voltage range of 2.7V to 5.5V. This allows direct operation from a single Li-Ion battery (nominal 3.7V, range 2.7V–4.2V) or from a regulated 3.3V/5V system rail with margin. Operation below 2.7V will cause output dropout; above 5.5V risks absolute maximum rating violation.
Does the LTC3204EDC-5#TRPBF use Burst Mode® or constant-frequency operation?
The LTC3204EDC-5#TRPBF is the "B" version (LTC3204B-5), which uses constant-frequency 1.2MHz operation across all load conditions - unlike the non-B LTC3204-5 that enters Burst Mode® at light loads. This ensures predictable EMI profile and eliminates low-frequency ripple artifacts in noise-sensitive applications.
What is the maximum continuous output current of the LTC3204EDC-5#TRPBF?
The LTC3204EDC-5#TRPBF delivers up to 150mA of continuous output current while maintaining 5V regulation within ±4% (4.8V–5.2V). This is validated under conditions of VIN ≥ 3.1V and ambient temperature ≤ 70°C; derating applies at higher temperatures or lower input voltages per the thermal curve in the datasheet.
How does the LTC3204EDC-5#TRPBF handle short-circuit conditions on VOUT?
The LTC3204EDC-5#TRPBF incorporates both current limiting (300mA typical) and thermal shutdown (~160°C junction). During a VOUT-to-GND short, it limits output current and cycles in/out of thermal shutdown indefinitely without damage. The exposed pad must be soldered to a ground plane to ensure effective heat dissipation and reliable fault recovery.
Can standard tantalum or aluminum electrolytic capacitors be used with the LTC3204EDC-5#TRPBF?
No - tantalum and aluminum electrolytic capacitors must not be used for CFLY, CIN, or COUT. The LTC3204EDC-5#TRPBF requires low-ESR ceramic capacitors (X5R/X7R dielectric, ≥2.2µF) because polarized types risk reverse-voltage damage during charge-pump phase switching, and high ESR degrades ripple, stability, and transient response.
LTC3204EDC-5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 150mA
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
LTC3204EDC-5#TRPBF FAQ
1.How can I place an order for LTC3204EDC-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3204EDC-5#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC3204EDC-5#TRPBF reliable?
The price and inventory of LTC3204EDC-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3204EDC-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3204EDC-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3204EDC-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3204EDC-5#TRPBF?
LTC3204EDC-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3204EDC-5#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC3204EDC-5#TRPBF?
For technical support, including LTC3204EDC-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3204EDC-5#TRPBF requirements.
6.How does Aetrix verify that LTC3204EDC-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3204EDC-5#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC3204EDC-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3204EDC-5#TRPBF?
All LTC3204EDC-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3204EDC-5#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC3204EDC-5#TRPBF part is unused and in its original packaging.
Return procedure for LTC3204EDC-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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